@media screen and (min-width: 768px) {
    .vintage4{
        font-size: 50px;
        color: gold;
        letter-spacing: 0;
        text-shadow: 0px 1px 0px #999, 0px 2px 0px #888, 0px 3px 0px #777, 0px 4px 0px #666, 0px 5px 0px #555, 0px 6px 0px #444, 0px 7px 0px #333, 0px 8px 7px #001135
    }
    .chooseBtn{
        margin-top: 200px;
        text-align: center;
        transform: translateX(-70px);
    }
    .yesterday{
        border-radius: 1000px;
        display: inline-block;
        margin-left: 150px;
    }
    .today{
        border-radius: 1000px;
        display: inline-block;
        margin-left: 150px;
    }
}
@media screen and (max-width: 768px) {
    .vintage4{
        font-size: 35px;
        color: gold;
        letter-spacing: 0;
        text-shadow: 0px 1px 0px #999, 0px 2px 0px #888, 0px 3px 0px #777, 0px 4px 0px #666, 0px 5px 0px #555, 0px 6px 0px #444, 0px 7px 0px #333, 0px 8px 7px #001135
    }
    .chooseBtn{
        margin-top: 200px;
        text-align: center;
        transform: translateX(-15px);
    }
    .yesterday{
        border-radius: 1000px;
        display: inline-block;
        margin-left: 30px;
    }
    .today{
        border-radius: 1000px;
        display: inline-block;
        margin-left: 30px;
    }
}
.header{
    margin-top: 40px;
    text-align: center;
}
body {
    background: black;
}
/*爱心跳动*/
.heart {
    margin: 100px auto;
    width: 200px;
    height: 200px;
    position: relative;
    animation-name: shake;
    animation-duration: .5s;
    animation-iteration-count: infinite;
}
.heart div {
    /* border: 1px solid #0094ff; */
    width: 100%;
    height: 100%;
    position: absolute;
    background: pink;
    animation-name: shadow;
    animation-duration: .5s;
    animation-iteration-count: infinite;
}
.topLeft,.topRight {
    border-radius: 100px 100px 0 0;
}
.topLeft {
    transform: translate(-50px, 0) rotate(-45deg);
}
.topRight {
    transform: translate(50px, 0) rotate(45deg);
}
.bottom {
    transform: translate(0, 64px) rotate(45deg) scale(.9, .9);
}
@keyframes shake {
    from {
        transform: scale(.9, .9);
    }
    to {
        transform: scale(1.1, 1.1);
    }
}
@keyframes shadow {
    from {}
    to {
        box-shadow: 0px 0px 50px pink;
    }
}